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SubjectRe: [ 06/41] PCI: ignore pre-1.1 ASPM quirking when ASPM is disabled
On Sat, Mar 31, 2012 at 04:23:56AM +0100, Ken Moffat wrote:

[ update : 3.4.0-rc1 boots without reverting this ]
> On Fri, Mar 16, 2012 at 04:38:16PM -0700, Greg KH wrote:
> > 3.2-stable review patch. If anyone has any objections, please let me know.
> >
> > ------------------
> >
> > From: Matthew Garrett <mjg@redhat.com>
> >
> > commit 4949be16822e92a18ea0cc1616319926628092ee upstream.
> >
> > Right now we won't touch ASPM state if ASPM is disabled, except in the case
> > where we find a device that appears to be too old to reliably support ASPM.
> > Right now we'll clear it in that case, which is almost certainly the wrong
> > thing to do. The easiest way around this is just to disable the blacklisting
> > when ASPM is disabled.
> >
> > Signed-off-by: Matthew Garrett <mjg@redhat.com>
> > Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> >
>
> Sorry for the late response, but I bought a new machine this week
> (low-end i3) and this has bitten me. I prepared a "generic" x86_64
> kernel using 3.2.9, which I hoped would be good enough to get me
> started, and later prepared another using 3.3.0. Long story short -
> 3.2.9 was adequate, 3.3.0 crashes early in boot (before switching
> from the 80x25 console to kms). All the interesting part has
> scrolled off the screen, and it's too early to get logged.
>
[...]
> Trial and error showed this commit seemed to be the
> problem.
>
> I then reverted this commit from 3.3.0, and took my amended .config
> which works adequately in vanilla 3.2.8. I'm now running that.
>
BUT, for 3.4.0-rc1 I don't need to revert it - just went with the
defaults for additions in menuconfig, and it boots fine. Maybe
something else needs to be backported ?

ken
--
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